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发明名称
Communications Privacy Protection System
摘要
申请公布号
CA2167875(A1)
申请公布日期
1996.09.04
申请号
CA19962167875
申请日期
1996.01.23
申请人
AT&T CORP.
发明人
LONDON, THOMAS B.
分类号
H04M1/57;H04M3/42;H04M3/48;(IPC1-7):H04M3/42
主分类号
H04M1/57
代理机构
代理人
主权项
地址
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